What he meant was that he would make cookies that his Grandma always made for him - the recipe of which she was taught in school, during the war. So, they are technically not war cookies - cookies being offered to the enemy for peace, to stop bombing their cities or anything - they were just popular during the war since they used ingredients that were easily available. None-the-less, the name for the cookies is catchy and intriguing - so I will refer to them as "Grandma's War Cookies."